/*
Poptrox 1.0: Make your images pop POP!
By nodethirtythree design | http://nodethirtythree.com/ | @nodethirtythree
Dual licensed under the MIT or GPL license.
//////////////////////////////////////////////////////////////////////////
MIT license:

Copyright (c) 2012 nodethirtythree design, http://nodethirtythree.com/

Permission is hereby granted, free of charge, to any person
obtaining a copy of this software and associated documentation
files (the "Software"), to deal in the Software without
restriction, including without limitation the rights to use,
copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the
Software is furnished to do so, subject to the following
conditions:

The above copyright notice and this permission notice shall be
included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
OTHER DEALINGS IN THE SOFTWARE.
//////////////////////////////////////////////////////////////////////////
GPL license:

Copyright (c) 2012 nodethirtythree design, http://nodethirtythree.com/
	
This program is free software: you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the Free 
Software Foundation, either version 3 of the License, or (at your option) 
any later version.

This program is distributed in the hope that it will be useful, but 
WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 
for more details.

You should have received a copy of the GNU General Public License along 
with this program. If not, see <http://www.gnu.org/licenses/>. 
//////////////////////////////////////////////////////////////////////////
*/

(function (jQuery) {
    jQuery.fn.poptrox = function (options) {

        // Settings

        var settings = jQuery.extend({
            preload: false, 			// If true, preload fullsize images in the background
            fadeSpeed: 300, 			// Global fade speed
            overlayColor: '#000000', 		// Overlay color
            overlayOpacity: 0.6, 			// Overlay opacity
            windowMargin: 50, 				// Window margin size (in pixels; only comes into play when an image is larger than the viewport)
            popupSpeed: 300, 			// Popup (resize) speed
            popupWidth: 200, 			// Popup width
            popupHeight: 100, 			// Popup height
            popupIsFixed: false, 			// If true, popup won't resize to fit images
            usePopupEasyClose: true, 			// If true, popup can be closed by clicking anywhere on the page
            usePopupLoader: true, 			// If true, show the popup loader
            usePopupCloser: true, 			// If true, show the popup closer button/link
            usePopupCaption: false, 			// If true, show the popup image caption
            usePopupDefaultStyling: true, 			// If true, default popup styling will be applied (background color, text color, etc)
            popupBackgroundColor: '#FFFFFF', 		// (Default Style) Popup background color (when usePopupStyling = true)
            popupTextColor: '#000000', 		// (Default Style) Popup text color (when usePopupStyling = true)
            popupLoaderTextSize: '2em', 			// (Default Style) Popup loader text size
            popupCloserBackgroundColor: '#000000', 		// (Default Style) Popup closer background color (when usePopupStyling = true)
            popupCloserTextColor: '#FFFFFF', 		// (Default Style) Popup closer text color (when usePopupStyling = true)
            popupCloserTextSize: '20px', 			// (Default Style) Popup closer text size
            popupPadding: 10, 				// (Default Style) Popup padding (when usePopupStyling = true)
            popupCaptionHeight: 60, 				// (Default Style) Popup height of caption area
            popupCaptionTextSize: null, 			// (Default Style) Popup caption text size
            popupBlankCaptionText: '(untitled)', 	// Applied to images that don't have captions (when captions are enabled)
            popupCloserText: '&#215;', 		// Popup closer text
            popupLoaderText: '&bull;&bull;&bull;&bull;', // Popup loader text
            popupClass: 'poptrox-popup', // Popup class
            popupSelector: null, 			// (Advanced) Popup selector (use this if you want to replace the built-in popup)
            popupLoaderSelector: '.loader', 		// (Advanced) Popup Loader selector
            popupCloserSelector: '.closer', 		// (Advanced) Popup Closer selector
            popupCaptionSelector: '.caption'			// (Advanced) Popup Caption selector
        }, options);

        // Variables

        var __msie6 = (jQuery.browser.msie && jQuery.browser.version == 6), __msie67 = (jQuery.browser.msie && jQuery.browser.version < 8), __pos = (__msie6 ? 'absolute' : 'fixed');
        var isLocked = false, cache = new Array();

        var _top = jQuery(this);
        var _body = jQuery('body');
        var _overlay = jQuery('<div></div>');
        var _window = jQuery(window);
        var windowWidth = jQuery(window).width(), windowHeight = jQuery(window).height();

        // Disable unused features
        if (!settings.usePopupLoader)
            settings.popupLoaderSelector = null;

        if (!settings.usePopupCloser)
            settings.popupCloserSelector = null;

        if (!settings.usePopupCaption)
            settings.popupCaptionSelector = null;

        // Get popup
        if (settings.popupSelector)
            var _popup = jQuery(settings.popupSelector);
        else
            var _popup = jQuery('<div class="' + settings.popupClass + '">' + (settings.popupLoaderSelector ? '<div class="loader">' + settings.popupLoaderText + '</div>' : '') + '<div class="pic"></div>' + (settings.popupCaptionSelector ? '<div class="caption"></div>' : '') + (settings.popupCloserSelector ? '<span class="closer">' + settings.popupCloserText + '</span>' : '') + '</div>');

        // Get popup components
        var _pic = _popup.find('.pic');
        var _loader = _popup.find(settings.popupLoaderSelector);
        var _caption = jQuery();
        var _closer = _popup.find(settings.popupCloserSelector);

        // Apply default styling?
        if (settings.usePopupDefaultStyling) {
            _popup.css('background', settings.popupBackgroundColor);
            _popup.css('color', settings.popupTextColor);
            _popup.css('padding', settings.popupPadding + 'px');

            if (_caption.length > 0) {
                _popup.css('padding-bottom', settings.popupCaptionHeight + 'px');
                _caption
							.css('position', 'absolute')
							.css('left', '0')
							.css('bottom', '0')
							.css('width', '100%')
							.css('text-align', 'center')
							.css('height', settings.popupCaptionHeight + 'px')
							.css('line-height', settings.popupCaptionHeight + 'px');

                if (settings.popupCaptionTextSize)
                    _caption.css('font-size', popupCaptionTextSize);
            }

            if (_closer.length > 0)
                _closer
							.html(settings.popupCloserText)
							.css('font-size', settings.popupCloserTextSize)
							.css('background', settings.popupCloserBackgroundColor)
							.css('color', settings.popupCloserTextColor)
							.css('display', 'block')
							.css('width', '40px')
							.css('height', '40px')
							.css('line-height', '40px')
							.css('text-align', 'center')
							.css('position', 'absolute')
							.css('text-decoration', 'none')
							.css('outline', '0')
							.css('top', '0')
							.css('right', '-40px');

            if (_loader.length > 0) {
                _loader
							.html('')
							.css('position', 'relative')
							.css('font-size', settings.popupLoaderTextSize)
							.bind('startSpinning', function (e) {
							    var x = jQuery('<div>' + settings.popupLoaderText + '</div>');
							    x
									.css('height', Math.floor(settings.popupHeight / 2) + 'px')
									.css('overflow', 'hidden')
									.css('line-height', Math.floor(settings.popupHeight / 2) + 'px')
									.css('text-align', 'center')
									.css('margin-top', Math.floor((_popup.height() - x.height() + (_caption.length > 0 ? _caption.height() : 0)) / 2))
									.css('color', (settings.popupTextColor ? settings.popupTextColor : ''))
									.bind('xfin', function () { x.fadeTo(300, 0.5, function () { x.trigger('xfout'); }); })
									.bind('xfout', function () { x.fadeTo(300, 0.05, function () { x.trigger('xfin'); }); })
									.trigger('xfin');
							    _loader.append(x);
							})
							.bind('stopSpinning', function (e) {
							    var x = _loader.find('div');
							    x.remove();
							});
            }
        }

        // Main
        _window
				.resize(function () {
				    windowWidth = jQuery(window).width(), windowHeight = jQuery(window).height();
				    _popup.trigger('poptrox_close');
				});

        _caption
				.bind('update', function (e, s) {
				    if (!s || s.length == 0)
				        s = settings.popupBlankCaptionText;
				    _caption.html(s);
				});

        _closer
				.css('cursor', 'pointer')
				.click(function (e) {
				    e.preventDefault();
				    _popup.trigger('poptrox_close');
				    return true;
				});

        _overlay
				.prependTo(__msie67 ? 'body' : 'html')
				.hide();

        if (__msie6)
            _overlay.css('position', 'absolute');
        else
            _overlay
					.css('position', __pos)
					.css('left', 0)
					.css('top', 0)
					.css('z-index', 100)
					.css('width', '200%')
					.css('height', '200%')
					.css('background-color', settings.overlayColor);

        if (settings.usePopupEasyClose) {
            _pic
					.css('cursor', 'pointer')
					.click(function () {
					    _popup.trigger('poptrox_close');
					});

            _overlay
					.css('cursor', 'pointer')
					.click(function () {
					    _popup.trigger('poptrox_close');
					});
        }

        _popup
				.bind('poptrox_reset', function () {
				    _popup
						.css('position', __pos)
						.css('z-index', 101)
						.css('width', settings.popupWidth + 'px')
						.css('height', settings.popupHeight + 'px')
						.css('left', (windowWidth / 2) + 'px')
						.css('top', (windowHeight / 2) + 'px')
						.css('top', (windowHeight / 2) + 'px')
						.css('margin-left', (-1 * (_popup.outerWidth() / 2)) + 'px')
						.css('margin-top', (-1 * (_popup.outerHeight() / 2)) + 'px')
				    _loader.hide().trigger('stopSpinning');
				    _caption.hide();
				    _closer.hide();
				    _pic
						.html('')
						.hide();
				})
				.bind('poptrox_open', function (e, src, captionText) {
				    if (isLocked)
				        return true;
				    isLocked = true;
				    _body.css('overflow', 'hidden');
				    _overlay
						.fadeTo(settings.fadeSpeed, settings.overlayOpacity, function () {
						    _pic.css('text-indent', '-9999em').show().html('<img src="' + src + '" alt="" />');
						    var img = _pic.find('img');
						    _loader.trigger('startSpinning').fadeIn(300);

						    if (settings.popupIsFixed) {
						        _popup
									.width(settings.popupWidth)
									.height(settings.popupHeight)
									.css('margin-left', (-1 * (_popup.innerWidth() / 2)) + 'px')
									.css('margin-top', (-1 * (_popup.innerHeight() / 2)) + 'px')
									.show();

						        img.load(function () {
						            _loader.hide().trigger('stopSpinning');
						            _caption.trigger('update', [captionText]).show();
						            _closer.show();
						            _pic.css('text-indent', 0).hide().fadeIn(settings.fadeSpeed, function () { isLocked = false; });
						        });
						    }
						    else {
						        _popup
									.show();

						        img.load(function () {
						            var dw = Math.abs(_popup.width() - _popup.outerWidth()), dh = Math.abs(_popup.height() - _popup.outerHeight());
						            var nw = img.prop('width'), nh = img.prop('height');
						            var uw = nw + dw, uh = nh + dh;
						            var maxw = windowWidth - (settings.windowMargin * 2), maxh = windowHeight - (settings.windowMargin * 2);

						            _loader.hide().trigger('stopSpinning');

						            if (uw > maxw || uh > maxh) {
						                var multw = maxw / uw, multh = maxh / uh, m = Math.min(multw, multh);
						                uw = m * uw; uh = m * uh;
						                nw = uw - dw; nh = uh - dh;
						                img.attr('width', nw).attr('height', nh);
						            }

						            _popup
										.animate({
										    width: nw,
										    height: nh,
										    marginLeft: (-1 * (uw / 2)),
										    marginTop: (-1 * (uh / 2))
										}, settings.popupSpeed, 'swing', function () {
										    _caption.trigger('update', [captionText]).show();
										    _closer.show();
										    _pic.css('text-indent', 0).hide().fadeIn(settings.fadeSpeed, function () { isLocked = false; });
										});
						        });
						    }

						});
				})
				.bind('poptrox_close', function () {
				    if (isLocked)
				        return true;
				    isLocked = true;
				    _popup
						.hide()
						.trigger('poptrox_reset');
				    _overlay
						.fadeOut(settings.fadeSpeed, function () {
						    _body.css('overflow', 'auto');
						    isLocked = false;
						});
				})
				.prependTo('body')
				.hide()
				.trigger('poptrox_reset');

        _window
				.keypress(function (e) {
				    if (e.keyCode == 27) {
				        e.preventDefault();
				        _popup.trigger('poptrox_close');
				    }
				});

        _top.find('a').each(function () {
            var a = jQuery(this), i = a.find('img'), title = i.attr('title'), src = a.attr('href');
            if (settings.preload) {
                var x = document.createElement('img'); x.src = src; cache.push(x);
            }
            i.attr('title', '');
            a
					.css('outline', 0)
					.click(function (e) {
					    e.preventDefault();
					    _popup.trigger('poptrox_open', [src, title]);
					});
        });

        return jQuery(this);
    };
})(jQuery);